BASH: linux scripting

Environment

• Ubuntu 22.04 LTS
• VIM
• shellcheck
• BASH

How to run the .sh files

• bash file.sh -Example: bash 001-hello.sh

• Or change permision and indicates the file is not in the path

• Bring execution permission chmod 755 file.sh

• Execute the file ./file.sh

Exit code

• To display the exit code after execute a script
• echo $? return the last return value to the system